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US20070044741A1 - Electromechanical valve actuator - Google Patents

Electromechanical valve actuator Download PDF

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Publication number
US20070044741A1
US20070044741A1 US11/216,756 US21675605A US2007044741A1 US 20070044741 A1 US20070044741 A1 US 20070044741A1 US 21675605 A US21675605 A US 21675605A US 2007044741 A1 US2007044741 A1 US 2007044741A1
Authority
US
United States
Prior art keywords
valve system
coil
magnets
valve
magnetic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/216,756
Other languages
English (en)
Inventor
D. Daniel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/US2005/030899 priority Critical patent/WO2007027174A2/fr
Priority to US11/216,756 priority patent/US20070044741A1/en
Publication of US20070044741A1 publication Critical patent/US20070044741A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2125—Shaft and armature construction
    • F01L2009/2126—Arrangements for amplifying the armature stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values

Definitions

  • This invention relates generally to valve devices. More particularly, this invention relates to an electromechanical valve actuator which utilizes a piston assembly incorporating magnets.
  • valves for use with internal combustion engines.
  • Conventional engine valves have undesirable friction and other sources of energy loss.
  • the disclosure relates to an improved valve system that is particularly configured for use with internal combustion engines.
  • the valve system advantageously eliminates the need for valve springs and other mechanical resistance components associated with conventional valves.
  • the valve system provides a valve system for an internal combustion engine.
  • the valve system includes an actuator assembly having a plurality of coil assemblies arranged in a substantially stacked configuration.
  • Each coil assembly includes a support made of an electrically insulative material, an electrically conductive coil positioned about the support and placeable in electrical communication with a source of electrical power, and a magnetic material substantially surrounding the electrically conductive coil.
  • a piston assembly is also provided and includes a non-magnetic plunger and a plurality of magnets and flux conduits arranged in a substantially stacked and alternating configuration on the plunger.
  • a valve member is attached to the piston assembly.
  • the piston assembly and the valve member are receivable within the actuator assembly.
  • the coil assemblies are desirably energized by the source of electrical energy to enable incremental travel of the valve member between positions corresponding to open and closed positions during a combustion cycle of an internal combustion engine.
  • FIG. 1 is a perspective view of a electromechanical valve actuator in accordance with a preferred embodiment.
  • FIG. 2 is an exploded view of the assembly of FIG. 1 .
  • FIG. 3 is an exploded view of a piston component of the assembly of FIGS. 1 and 2 .
  • FIG. 4 is an exploded view of a coil component of the assembly of FIGS. 1 and 2 .
  • FIG. 5 is a partial cutaway view of the coil component of FIG. 4 .
  • FIG. 6 is a partial cutaway view of an alternative embodiment of a coil component.
  • valve system 10 particularly configured for use with internal combustion engines.
  • the valve system 10 preferably includes, as major components, an actuator assembly 12 including a plurality of coil assemblies 14 , 16 , and 18 , a piston assembly 20 , and a valve 22 .
  • the piston assembly 20 attaches to the valve 22 .
  • the coil assemblies 14 - 18 are configured to receive the valve 20 and piston assembly 22 .
  • the coil assemblies 14 - 18 are desirably energized to enable incremental travel of the valve 22 between positions corresponding to the open and closed positions during a combustion cycle of an internal combustion engine.
  • the piston assembly 22 preferably includes a non-magnetic plunger 24 having a base 26 and a shaft 28 .
  • a plurality of ring magnets 30 and a plurality of flux conduits 32 are positioned in alternating stacked fashion along the shaft 28 and maintained in position by a non-magnetic retainer 34 .
  • the plunger 24 and the retainer 34 are preferably made of brass or the like.
  • Each of the ring magnets 30 may be a single magnet or a plurality of thinner ring magnets stacked to provide the desired thickness.
  • the desired thickness is about 0.250 inches.
  • the ring magnets 30 are preferably provided by rare earth magnets and preferably have an inner diameter of about 0.375 inches and an outer diameter of about 0.75 inches.
  • the flux conduits 32 are preferably steel rings dimensioned similar to the magnets:
  • the plunger 24 is preferably sized to function as a bearing surface on the inside of the actuator assembly 10 .
  • the magnets and the flux conduits are provided on the plunger in a configuration to avoid excessive frictional interference during movement thereof in operation
  • FIGS. 4 and 5 there is shown an exploded view of the coil assembly 14 , but with a magnetic material removed. It will be understood that the coil assemblies 16 and 18 are preferably identical to the coil assembly 14 .
  • the coil assembly 14 preferably includes a center support 40 in the form of a cylinder made of an electrically insulative material, such as a plastic material, most preferably polyvinyl chloride (PVC).
  • a pair of washer shaped inner walls 42 preferably made of the same material as the center support 40 , are preferably secured adjacent opposite ends of the center support 40 , as by adhesive.
  • An electrically conductive coil 44 preferably made of copper wire, is wound on a bobbin structure provided by the center support 40 and the walls 42 . Opposite ends of the copper wire preferably extend from the coil 44 to serve as electrical leads 46 .
  • a protective coating such as epoxy, is preferably applied to the windings of the coil 44 to protect it from contamination from magnetic material and the like.
  • a shell 50 and one of two outer walls 52 are next installed around the center support and coil assembly as shown in FIG. 5 , with the wall 52 secured to the shell 50 as by use of adhesive.
  • the shell 50 and the walls 52 are made of electrically insulative material, preferably the same material as used for the center support 40 and the inner walls 42 .
  • the leads 46 pass through apertures provide through the shell 50 and are preferably electrically insulated.
  • Magnetic material 54 is supplied within the annular space between the center support 40 and the shell 50 .
  • iron filings may be used to provide the magnetic material 54
  • the second outer wall 52 installed to provide structure to retain the magnetic material 54 in place.
  • the magnetic material 54 may be provided as by a high permeability anisotropic magnetic material provided in preformed toroids 60 , each preferably having an epoxy or other protective coating.
  • the toroid 60 adjacent the coil 44 is preferably slit as at 62 to enable passage of the leads 46 .
  • each valve will include a drive circuit or amplifier or the like to supply a desired current to operate the valve as well as to hold the valve in place when not in motion.
  • the valve system advantageously eliminates the use of valve springs and other mechanical force components and substantially reduces mechanical resistance and the like so as to eliminate many of the energy losses associated with the operation of conventional engine valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
US11/216,756 2005-08-30 2005-08-31 Electromechanical valve actuator Abandoned US20070044741A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2005/030899 WO2007027174A2 (fr) 2005-08-30 2005-08-31 Actionneur electromecanique
US11/216,756 US20070044741A1 (en) 2005-08-31 2005-08-31 Electromechanical valve actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/216,756 US20070044741A1 (en) 2005-08-31 2005-08-31 Electromechanical valve actuator

Publications (1)

Publication Number Publication Date
US20070044741A1 true US20070044741A1 (en) 2007-03-01

Family

ID=37802297

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/216,756 Abandoned US20070044741A1 (en) 2005-08-30 2005-08-31 Electromechanical valve actuator

Country Status (2)

Country Link
US (1) US20070044741A1 (fr)
WO (1) WO2007027174A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8517334B2 (en) * 2011-09-14 2013-08-27 National Taipei University Of Technology Electromagnetic valve mechanism
WO2015021163A2 (fr) 2013-08-09 2015-02-12 Sentimetal Journey Llc Système d'actionneur de soupape linéaire et procédé de commande d'actionnement de soupape
US9109714B2 (en) 2011-11-07 2015-08-18 Sentimetal Journey Llc Linear valve actuator system and method for controlling valve operation
US10385797B2 (en) 2011-11-07 2019-08-20 Sentimetal Journey Llc Linear motor valve actuator system and method for controlling valve operation
WO2020018244A1 (fr) * 2018-07-16 2020-01-23 The Florida State University Research Foundation, Inc. Actionneur linéaire pour commande de soupape et systèmes et procédés d'actionnement
WO2020022949A3 (fr) * 2018-12-10 2020-03-12 Hedman Ericsson Patent Ab Procédé et dispositif de commande électrique d'un bouton-poussoir dans un moteur à combustion interne
US10601293B2 (en) 2018-02-23 2020-03-24 SentiMetal Journey, LLC Highly efficient linear motor
US10774696B2 (en) 2018-02-23 2020-09-15 SentiMetal Journey, LLC Highly efficient linear motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346797A (en) * 1980-07-25 1982-08-31 Eaton Corporation Magnetically actuated viscous fluid coupling
US4533890A (en) * 1984-12-24 1985-08-06 General Motors Corporation Permanent magnet bistable solenoid actuator
US6039014A (en) * 1998-06-01 2000-03-21 Eaton Corporation System and method for regenerative electromagnetic engine valve actuation
US6373678B1 (en) * 1999-05-03 2002-04-16 Fev Motorentechnik Gmbh Method of regulating the armature impact speed in an electromagnetic actuator by controlling the current supply based on performance characteristics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346797A (en) * 1980-07-25 1982-08-31 Eaton Corporation Magnetically actuated viscous fluid coupling
US4533890A (en) * 1984-12-24 1985-08-06 General Motors Corporation Permanent magnet bistable solenoid actuator
US6039014A (en) * 1998-06-01 2000-03-21 Eaton Corporation System and method for regenerative electromagnetic engine valve actuation
US6373678B1 (en) * 1999-05-03 2002-04-16 Fev Motorentechnik Gmbh Method of regulating the armature impact speed in an electromagnetic actuator by controlling the current supply based on performance characteristics

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8517334B2 (en) * 2011-09-14 2013-08-27 National Taipei University Of Technology Electromagnetic valve mechanism
US9109714B2 (en) 2011-11-07 2015-08-18 Sentimetal Journey Llc Linear valve actuator system and method for controlling valve operation
US9739229B2 (en) 2011-11-07 2017-08-22 Sentimetal Journey Llc Linear valve actuator system and method for controlling valve operation
US10385797B2 (en) 2011-11-07 2019-08-20 Sentimetal Journey Llc Linear motor valve actuator system and method for controlling valve operation
WO2015021163A2 (fr) 2013-08-09 2015-02-12 Sentimetal Journey Llc Système d'actionneur de soupape linéaire et procédé de commande d'actionnement de soupape
WO2015021163A3 (fr) * 2013-08-09 2015-04-23 Sentimetal Journey Llc Système d'actionneur de soupape linéaire et procédé de commande d'actionnement de soupape
CN105473918A (zh) * 2013-08-09 2016-04-06 情感之旅有限公司 线性阀致动器系统及用于控制阀操作的方法
EP3030817A4 (fr) * 2013-08-09 2017-04-19 Sentimetal Journey LLC Système d'actionneur de soupape linéaire et procédé de commande d'actionnement de soupape
US10601293B2 (en) 2018-02-23 2020-03-24 SentiMetal Journey, LLC Highly efficient linear motor
US10774696B2 (en) 2018-02-23 2020-09-15 SentiMetal Journey, LLC Highly efficient linear motor
WO2020018244A1 (fr) * 2018-07-16 2020-01-23 The Florida State University Research Foundation, Inc. Actionneur linéaire pour commande de soupape et systèmes et procédés d'actionnement
US11004587B2 (en) 2018-07-16 2021-05-11 The Florida State University Research Foundation, Inc. Linear actuator for valve control and operating systems and methods
WO2020022949A3 (fr) * 2018-12-10 2020-03-12 Hedman Ericsson Patent Ab Procédé et dispositif de commande électrique d'un bouton-poussoir dans un moteur à combustion interne
SE543398C2 (sv) * 2018-12-10 2020-12-29 Hedman Ericsson Patent Ab Elektriskt aktiverad ventilaktuator för en internförbränningsmotor
US11255228B2 (en) 2018-12-10 2022-02-22 Hedman Ericsson Patent Ab Method and device for electrically controlling a valve actuator in an internal combustion engine
EP3894672A4 (fr) * 2018-12-10 2022-09-21 Hedman Ericsson Patent AB Procédé et dispositif de commande électrique d'un bouton-poussoir dans un moteur à combustion interne

Also Published As

Publication number Publication date
WO2007027174A2 (fr) 2007-03-08
WO2007027174A3 (fr) 2009-09-17

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